Issue with installing Git::Repository

I'm trying to install GR on a server running Ubuntu 10.04, which has git
v1.7.0.4 installed. It's failing due to test t/40-plugin-log.t, which
gives the error:
fatal: unrecognized argument: --color=never at /home/staff/djh/.cpan/sources/authors/id/B/BO/BOOK/Git-Repository-1.29/blib/lib/Git/Repository/Log/Iterator.pm line 49.

From what I can tell, the ability to give --color params wasn't added
until git v1.7.1 - prior to this, one would instead use the --no-color
flag.

Making the change below fixes the issue for my old Git version, and
should also work on all later versions.